Got undefinied from mongoDB

Hi,
when i do model.find() i found the object in my DB but when i want to use the OBJECT.KEY here (data.original_url) i got undefined … help pls
my code :

require('dotenv').config();
const express = require('express');
const cors = require('cors');
const app = express();
var bodyParser = require("body-parser"); 
const dns = require('dns');
const mongoose = require('mongoose');
const { doesNotMatch } = require('assert');
const Schema = mongoose.Schema; 
mongoose.connect(process.env.MANGO_URI)

const website = new Schema ({
  original_url: {type: String, required: true},
  short_url: Number
})
let Website = mongoose.model("Website", website);
app.use(bodyParser.urlencoded({ extended: false }));

// Basic Configuration
const port = process.env.PORT || 3000;

app.use((req, res, next) => {
  console.log(`${req.method} ${req.path} - ${req.ip}`);
  next();
})

app.use(cors());

app.use('/public', express.static(`${process.cwd()}/public`));

app.get('/', function(req, res) {
  res.sendFile(process.cwd() + '/views/index.html');
});
var counter = 0;
// Your first API endpoint
app.get('/api/hello', function(req, res) {
  res.json({ greeting: 'hello API' });
});

app.route('/api/shorturl').post((req, res) => {
  try {
    var adr = new URL(req.body.url);
    adr = adr.hostname;
    dns.lookup(adr, (err, address, family) => {
    if (err) {
      res.json({error: "invalid url"});
    }
    else {
      counter++;
      var web = new Website ({
        original_url: req.body.url,
        short_url: counter
      });
      web.save((err, data) => {
        if (err)
          return console.error(err);
      })
      res.json({'original_url': req.body.url, 'short_url': counter});
    }
    }); 
    }
  catch (error) {
    res.json({error: "invalid url"});
  }

});

app.get('/api/shorturl/:short', (req, res) => {
  console.log(req.params);
  var ss = parseInt(req.params.short);
  Website.find({short_url: ss}, (err, data) => {
    if (err)
      return console.error(err);
    return res.redirect(data.original_url);
  })
});

app.listen(port, function() {
  console.log(`Listening on port ${port}`);
});